diff --git a/jacodb-core/src/main/kotlin/org/jacodb/impl/cfg/RawInstListBuilder.kt b/jacodb-core/src/main/kotlin/org/jacodb/impl/cfg/RawInstListBuilder.kt
index 2c0b9a7c3..b734381db 100644
--- a/jacodb-core/src/main/kotlin/org/jacodb/impl/cfg/RawInstListBuilder.kt
+++ b/jacodb-core/src/main/kotlin/org/jacodb/impl/cfg/RawInstListBuilder.kt
@@ -383,7 +383,7 @@ class RawInstListBuilder(
         val localTypeRefinementExprMap = localTypeRefinement as Map<JcRawExpr, JcRawExpr>
         val localsNormalizedInstructionList = originalInstructionList.map(ExprMapper(localTypeRefinementExprMap))
 
-        return Simplifier().simplify(method.enclosingClass.classpath, localsNormalizedInstructionList)
+        return Simplifier().simplify(localsNormalizedInstructionList)
     }
 
     private fun MutableList<JcRawInst>.ensureFirstInstIsLineNumber() {
diff --git a/jacodb-core/src/main/kotlin/org/jacodb/impl/cfg/Simplifier.kt b/jacodb-core/src/main/kotlin/org/jacodb/impl/cfg/Simplifier.kt
index ac61d5c87..cf73da2d2 100644
--- a/jacodb-core/src/main/kotlin/org/jacodb/impl/cfg/Simplifier.kt
+++ b/jacodb-core/src/main/kotlin/org/jacodb/impl/cfg/Simplifier.kt
@@ -16,7 +16,6 @@
 
 package org.jacodb.impl.cfg
 
-import org.jacodb.api.jvm.JcClasspath
 import org.jacodb.api.jvm.cfg.AbstractFullRawExprSetCollector
 import org.jacodb.api.jvm.cfg.JcInstList
 import org.jacodb.api.jvm.cfg.JcRawAssignInst
@@ -41,7 +40,7 @@ import org.jacodb.impl.cfg.util.InstructionFilter
  * the frames merging)
  */
 internal class Simplifier {
-    fun simplify(jcClasspath: JcClasspath, instList: JcInstList<JcRawInst>): JcInstList<JcRawInst> {
+    fun simplify(instList: JcInstList<JcRawInst>): JcInstList<JcRawInst> {
         // clear the assignments that are repeated inside single basic block
         var instructionList = cleanRepeatedAssignments(instList)